(in-package :TRAPS)
; Generated from #P"macintosh-hd:hd3:CInterface Translator:Source Interfaces:lock.h"
; at Sunday July 2,2006 7:26:31 pm.
; 
;  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
;  *
;  * @APPLE_LICENSE_HEADER_START@
;  * 
;  * The contents of this file constitute Original Code as defined in and
;  * are subject to the Apple Public Source License Version 1.1 (the
;  * "License").  You may not use this file except in compliance with the
;  * License.  Please obtain a copy of the License at
;  * http://www.apple.com/publicsource and read it before using this file.
;  * 
;  * This Original Code and all software distributed under the License are
;  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
;  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
;  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
;  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
;  * License for the specific language governing rights and limitations
;  * under the License.
;  * 
;  * @APPLE_LICENSE_HEADER_END@
;  
; 
;  * Copyright (C) 1998 Apple Computer
;  * All Rights Reserved
;  
; 
;  * @OSF_COPYRIGHT@
;  
;  
;  * Mach Operating System
;  * Copyright (c) 1991,1990 Carnegie Mellon University
;  * All Rights Reserved.
;  * 
;  * Permission to use, copy, modify and distribute this software and its
;  * documentation is hereby granted, provided that both the copyright
;  * notice and this permission notice appear in all copies of the
;  * software, derivative works or modified versions, and any portions
;  * thereof, and that both notices appear in supporting documentation.
;  * 
;  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
;  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
;  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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;  * Carnegie Mellon requests users of this software to return to
;  * 
;  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
;  *  School of Computer Science
;  *  Carnegie Mellon University
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;  * 
;  * any improvements or extensions that they make and grant Carnegie Mellon
;  * the rights to redistribute these changes.
;  
; 
;  
; 
;  * Machine-dependent simple locks for the i386.
;  
; #ifndef	_I386_LOCK_H_
; #define	_I386_LOCK_H_

(require-interface "sys/appleapiopts")
; #ifdef __APPLE_API_PRIVATE
#| #|

#ifdefMACH_KERNEL_PRIVATE

#include <kernmacro_help.h>
#include <kernassert.h>
#include <i386hw_lock_types.h>

#include <mach_rt.h>
#include <mach_ldebug.h>
#include <cpus.h>


#ifdefined(__GNUC__)



#define bit_lock(bit,l)							\
	__asm__ volatile("	jmp	1f	\n			\
		 	0:	btl	%0, %1	\n			\
				jb	0b	\n			\
			1:	lock		\n			\
				btsl	%0,%1	\n			\
				jb	0b"			:	\
								:	\
			"r" (bit), "m" (*(volatile int *)(l))	:	\
			"memory");

#define bit_unlock(bit,l)						\
	__asm__ volatile("	lock		\n			\
				btrl	%0,%1"			:	\
								:	\
			"r" (bit), "m" (*(volatile int *)(l)));



#define i_bit_set(bit,l)						\
	__asm__ volatile("	lock		\n			\
				btsl	%0,%1"			:	\
								:	\
			"r" (bit), "m" (*(volatile int *)(l)));

#define i_bit_clear(bit,l)						\
	__asm__ volatile("	lock		\n			\
				btrl	%0,%1"			:	\
								:	\
			"r" (bit), "m" (*(volatile int *)(l)));

extern __inline__ unsigned long i_bit_isset(unsigned int testbit, volatile unsigned long *word)
{
	int	bit;

	__asm__ volatile("btl %2,%1\n\tsbbl %0,%0" : "=r" (bit)
		: "m" (word), "ir" (testbit));
	return bit;
}

extern __inline__ char	xchgb(volatile char * cp, char new);

extern __inline__ void	atomic_incl(long * p, long delta);
extern __inline__ void	atomic_incs(short * p, short delta);
extern __inline__ void	atomic_incb(char * p, char delta);

extern __inline__ void	atomic_decl(long * p, long delta);
extern __inline__ void	atomic_decs(short * p, short delta);
extern __inline__ void	atomic_decb(char * p, char delta);

extern __inline__ long	atomic_getl(long * p);
extern __inline__ short	atomic_gets(short * p);
extern __inline__ char	atomic_getb(char * p);

extern __inline__ void	atomic_setl(long * p, long value);
extern __inline__ void	atomic_sets(short * p, short value);
extern __inline__ void	atomic_setb(char * p, char value);

extern __inline__ char	xchgb(volatile char * cp, char new)
{
	register char	old = new;

	__asm__ volatile ("	xchgb	%0,%2"			:
			"=q" (old)				:
			"0" (new), "m" (*(volatile char *)cp) : "memory");
	return (old);
}

extern __inline__ void	atomic_incl(long * p, long delta)
{
#ifNEED_ATOMIC
	__asm__ volatile ("	lock		\n		\
				addl    %0,%1"		:	\
							:	\
				"r" (delta), "m" (*(volatile long *)p));
#else
	*p += delta;
#endif
}

extern __inline__ void	atomic_incs(short * p, short delta)
{
#ifNEED_ATOMIC
	__asm__ volatile ("	lock		\n		\
				addw    %0,%1"		:	\
							:	\
				"q" (delta), "m" (*(volatile short *)p));
#else
	*p += delta;
#endif
}

extern __inline__ void	atomic_incb(char * p, char delta)
{
#ifNEED_ATOMIC
	__asm__ volatile ("	lock		\n		\
				addb    %0,%1"		:	\
							:	\
				"q" (delta), "m" (*(volatile char *)p));
#else
	*p += delta;
#endif
}

extern __inline__ void	atomic_decl(long * p, long delta)
{
#ifNCPUS > 1
	__asm__ volatile ("	lock		\n		\
				subl	%0,%1"		:	\
							:	\
				"r" (delta), "m" (*(volatile long *)p));
#else
	*p -= delta;
#endif
}

extern __inline__ void	atomic_decs(short * p, short delta)
{
#ifNEED_ATOMIC
	__asm__ volatile ("	lock		\n		\
				subw    %0,%1"		:	\
							:	\
				"q" (delta), "m" (*(volatile short *)p));
#else
	*p -= delta;
#endif
}

extern __inline__ void	atomic_decb(char * p, char delta)
{
#ifNEED_ATOMIC
	__asm__ volatile ("	lock		\n		\
				subb    %0,%1"		:	\
							:	\
				"q" (delta), "m" (*(volatile char *)p));
#else
	*p -= delta;
#endif
}

extern __inline__ long	atomic_getl(long * p)
{
	return (*p);
}

extern __inline__ short	atomic_gets(short * p)
{
	return (*p);
}

extern __inline__ char	atomic_getb(char * p)
{
	return (*p);
}

extern __inline__ void	atomic_setl(long * p, long value)
{
	*p = value;
}

extern __inline__ void	atomic_sets(short * p, short value)
{
	*p = value;
}

extern __inline__ void	atomic_setb(char * p, char value)
{
	*p = value;
}


#else

extern void	i_bit_set(
	int index,
	void *addr);

extern void	i_bit_clear(
	int index,
	void *addr);

extern void bit_lock(
	int index,
	void *addr);

extern void bit_unlock(
	int index,
	void *addr);



#endif

extern void		kernel_preempt_check (void);

#endif

#endif
|#
 |#
;  __APLE_API_PRIVATE 

; #endif	/* _I386_LOCK_H_ */


(provide-interface "lock")